patch-2.4.10 linux/arch/mips64/mips-boards/generic/init.c
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- Lines: 153
- Date:
Sun Sep 9 10:43:02 2001
- Orig file:
v2.4.9/linux/arch/mips64/mips-boards/generic/init.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.9/linux/arch/mips64/mips-boards/generic/init.c linux/arch/mips64/mips-boards/generic/init.c
@@ -0,0 +1,152 @@
+/*
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
+ *
+ * ########################################################################
+ *
+ * This program is free software; you can distribute it and/or modify it
+ * under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * ########################################################################
+ *
+ * PROM library initialisation code.
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+
+#include <asm/io.h>
+#include <asm/mips-boards/prom.h>
+#include <asm/mips-boards/generic.h>
+#include <asm/mips-boards/gt64120.h>
+#include <asm/mips-boards/malta.h>
+
+/* Environment variable */
+typedef struct
+{
+ char *name;
+ char *val;
+}t_env_var;
+
+int prom_argc;
+int *_prom_argv, *_prom_envp;
+
+/*
+ * A 32-bit PROM pass arguments and environment as 32-bit pointer.
+ * This macro take care of sign extension.
+ */
+#define prom_envp(index) ((char *)(((int *)(int)_prom_envp)[(index)]))
+
+int init_debug = 0;
+
+char *prom_getenv(char *envname)
+{
+ /*
+ * Return a pointer to the given environment variable.
+ * We're using 64-bit pointers, but all pointers in the PROM
+ * structures are only 32-bit, so we need some workarounds.
+ */
+ int i, index=0;
+
+ i = strlen(envname);
+
+ while(prom_envp(index)) {
+ if(strncmp(envname, prom_envp(index), i) == 0) {
+ return(prom_envp(index+1));
+ }
+ index += 2;
+ }
+
+ return(NULL);
+}
+
+static inline unsigned char str2hexnum(unsigned char c)
+{
+ if(c >= '0' && c <= '9')
+ return c - '0';
+ if(c >= 'a' && c <= 'f')
+ return c - 'a' + 10;
+ return 0; /* foo */
+}
+
+static inline void str2eaddr(unsigned char *ea, unsigned char *str)
+{
+ int i;
+
+ for(i = 0; i < 6; i++) {
+ unsigned char num;
+
+ if((*str == '.') || (*str == ':'))
+ str++;
+ num = str2hexnum(*str++) << 4;
+ num |= (str2hexnum(*str++));
+ ea[i] = num;
+ }
+}
+
+int get_ethernet_addr(char *ethernet_addr)
+{
+ char *ethaddr_str;
+
+ ethaddr_str = prom_getenv("ethaddr");
+ if (!ethaddr_str) {
+ printk("ethaddr not set in boot prom\n");
+ return -1;
+ }
+ str2eaddr(ethernet_addr, ethaddr_str);
+
+ if (init_debug > 1)
+ {
+ int i;
+ printk("get_ethernet_addr: ");
+ for (i=0; i<5; i++)
+ printk("%02x:", (unsigned char)*(ethernet_addr+i));
+ printk("%02x\n", *(ethernet_addr+i));
+ }
+
+ return 0;
+}
+
+int __init prom_init(int argc, char **argv, char **envp)
+{
+ prom_argc = argc;
+ _prom_argv = (int *)argv;
+ _prom_envp = (int *)envp;
+
+ mips_display_message("LINUX");
+
+ /*
+ * Setup the North bridge to do Master byte-lane swapping when
+ * running in bigendian.
+ */
+#if defined(__MIPSEL__)
+ GT_WRITE(GT_PCI0_CMD_OFS, GT_PCI0_CMD_MBYTESWAP_BIT |
+ GT_PCI0_CMD_SBYTESWAP_BIT);
+#else
+ GT_WRITE(GT_PCI0_CMD_OFS, 0);
+#endif
+
+#if defined(CONFIG_MIPS_MALTA)
+ mips_io_port_base = MALTA_PORT_BASE;
+#else
+ mips_io_port_base = KSEG1;
+#endif
+
+ setup_prom_printf(0);
+ prom_printf("\nLINUX started...\n");
+ prom_init_cmdline();
+ prom_meminit();
+
+ return 0;
+}
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